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The n_TOF facility has just undergone in 2021 a major upgrade with the installation of its third generation spallation target that has been designed to optimize the performance of the two n_TOF time-of-flight lines. This contribution…

Nuclear Experiment · Physics 2023-06-21 J. Lerendegui-Marco , A. Casanovas , V. Alcayne , the n_TOF Collaboration

The European Spallation Source (ESS), presently under construction in Lund, Sweden, is a multidisciplinary international laboratory that will operate the world's most powerful pulsed neutron source. Supported by a 3M Euro Research and…

The Spallation Neutron Source (SNS) is a pulsed source of neutrons and, as a byproduct of this operation, an intense source of neutrinos via stopped-pion decay. The COHERENT collaboration uses this source to investigate coherent elastic…

Instrumentation and Detectors · Physics 2019-10-03 Rebecca Rapp

In the future several Spallation Source facilities will be available worldwide. Spallation Sources produce large amount of neutrinos from decay-at-rest muons and thus can be well adapted to accommodate state-of-the-art neutrino experiments.…

High Energy Physics - Phenomenology · Physics 2010-12-02 R. Lazauskas , C. Volpe

The ultracold neutron (UCN) source at the Paul Scherrer Institute (PSI) provides high intensities of storable neutrons for fundamental physics experiments. The neutron velocity spectrum parallel to the beamline axis was determined by…

Instrumentation and Detectors · Physics 2023-10-02 G. Bison , W. Chen , P. -J. Chiu , M. Daum , C. B. Doorenbos , K. Kirch , V. Kletzl , B. Lauss , D. Pais , I. Rienäcker , P. Schmidt-Wellenburg , G. Zsigmond

The Front End of the Spallation Neutron Source (SNS) extends from the Ion Source (IS), through a 65 keV LEBT, a 402.5 MHz RFQ, a 2.5 MeV MEBT, ending at the entrance to the DTL. The diagnostics suite in this space includes stripline beam…

Accelerator Physics · Physics 2010-11-15 L. Doolittle , T. Goulding , D. Oshatz , A. Ratti , J. Staples

The Taishan Antineutrino Observatory (TAO) is a ton-level liquid scintillator detector to be placed at 30\,m from a core of the Taishan Nuclear Power Plant for precise reactor antineutrino spectrum measurements. One important background for…

Instrumentation and Detectors · Physics 2022-09-07 Ruhui Li , Yichen Li , Zhimin Wang , Qiang Li , Liang Zhan , Jun Cao

We report on the measurements of the fluxes and spectra of the environmental fast neutron background at the China Jinping Underground Laboratory (CJPL) with a rock overburden of about 6700 meters water equivalent, using a liquid…

Instrumentation and Detectors · Physics 2018-03-07 Qiang Du , Shin-Ted Lin , Shu-Kui Liu , Chang-Jian Tang , Li Wang , Wei-Wei Wei , Henry T. Wong , Hao-Yang Xing , Qian Yue , Jing-Jun Zhu

In the National Spallation Neutron Source (NSNS) design, a 180 meter long transport line connects the 1 GeV linac to an accumulator ring. The linac beam has a current of 28 mA, pulse length of 1 ms, and 60 Hz rep rate. The high energy…

Accelerator Physics · Physics 2008-11-26 D. Raparia , J. Alessi , Y. Y. Lee , W. T. Weng

A prototype quasi-parasitic thermal neutron beam monitor based on isotropic neutron scattering from a thin natural vanadium foil and standard $^3$He proportional counters is conceptualized, designed, simulated, calibrated, and commissioned.…

Instrument backgrounds at neutron scattering facilities directly affect the quality and the efficiency of the scientific measurements that users perform. Part of the background at pulsed spallation neutron sources is caused by, and…

The design and performance of the new Cold Neutron Chopper Spectrometer (CNCS) at the Spallation Neutron Source in Oak Ridge are described. CNCS is a direct geometry inelastic time-of-flight spectrometer, designed to cover essentially the…

Instrumentation and Detectors · Physics 2015-05-30 G. Ehlers , A. Podlesnyak , J. L. Niedziela , E. B. Iverson

Canada's access to neutron beams for neutron scattering was significantly curtailed in 2018 with the closure of the National Research Universal (NRU) reactor in Chalk River, Ontario, Canada. New sources are needed for the long-term;…

The coherent elastic scattering of neutrinos on nuclei, also known as CEvNS, has been studied for several years by the COHERENT program of experiments using neutrinos from stopped-pion decays produced at the Spallation Neutron Source (SNS).…

We present a new experimental method for measuring the process of Coherent Elastic Neutrino Nucleus Scattering (CENNS). This method uses a detector situated transverse to a high energy neutrino beam production target. This detector would be…

The global availability of high-intensity neutron sources is restricted by the prohibitive costs of spallation facilities and the decommissioning of aging research reactors, while compact accelerator-driven sources (CANS) are fundamentally…

Accelerator Physics · Physics 2026-02-11 Antonio Cammi , Lorenzo Loi , Andrea Missaglia , David Alesini , Hans Heinrich Braun

A comprehensive and reliable nuclear database of neutron-induced process is required by the development of Accelerator-Driven System technology. Although many excellent efforts have been made, the measurements to the fission fragment in…

Instrumentation and Detectors · Physics 2023-07-27 Yuhang Guo , Mengzhao Li , Mengchen Niu , Zhijun Liang , Ruirui Fan

The construction of the European Spallation Source (ESS) faces many challenges from the neutron beam transport point of view: The spallation source is specified as being driven by a 5 MW beam of protons, each with 2 GeV energy, and yet the…

Instrumentation and Detectors · Physics 2015-10-02 C. Zendler , D. Martin Rodriguez , P. M. Bentley

A neutron spectrometer, the European Low-Energy Neutron Spectrometer (ELENS), has been constructed to study exotic nuclei in inverse-kinematics experiments. The spectrometer, which consists of plastic scintillator bars, can be operated in…

Pulsed beams have tremendous advantages for precision experiments with cold neutrons. In order to minimise and measure systematic effects, they are used at continuous sources in spite of the related substantial decrease in intensity. At the…

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